The Tenth Doctor shown Donna a copy of Death in the Clouds with a copyright page identifying it as a facsimile edition published in the year 5,000,000,000. (TV: The Unicorn and the Wasp)
When reading an unwanted book about golf, Panda used blu-tack to turn the pages. (PROSE: Iris Wildthyme and the Unholy Ghost)
Behind the scenes
Information from invalid sources
The editor of Target Books once told two of his writers to write 128 pages and then simply stop. (NOTVALID: The Complete Guide to Doctor Who?)